crypto/perlasm/x86ms.pl

   1 #!/usr/local/bin/perl
   2
   3 package x86ms;
   4
   5 $label="L000";
   6
   7 %lb=(   'eax',  'al',
   8         'ebx',  'bl',
   9         'ecx',  'cl',
  10         'edx',  'dl',
  11         'ax',   'al',
  12         'bx',   'bl',
  13         'cx',   'cl',
  14         'dx',   'dl',
  15         );
  16
  17 %hb=(   'eax',  'ah',
  18         'ebx',  'bh',
  19         'ecx',  'ch',
  20         'edx',  'dh',
  21         'ax',   'ah',
  22         'bx',   'bh',
  23         'cx',   'ch',
  24         'dx',   'dh',
  25         );
  26
  27 sub main'asm_init_output { @out=(); }
  28 sub main'asm_get_output { return(@out); }
  29 sub main'get_labels { return(@labels); }
  30 sub main'external_label { push(@labels,@_); }
  31
  32 sub main'LB
  33         {
  34         (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
  35         return($lb{$_[0]});
  36         }
  37
  38 sub main'HB
  39         {
  40         (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
  41         return($hb{$_[0]});
  42         }
  43
  44 sub main'BP
  45         {
  46         &get_mem("BYTE",@_);
  47         }
  48
  49 sub main'DWP
  50         {
  51         &get_mem("DWORD",@_);
  52         }
  53
  54 sub main'QWP
  55         {
  56         &get_mem("QWORD",@_);
  57         }
  58
  59 sub main'BC
  60         {
  61         return @_;
  62         }
  63
  64 sub main'DWC
  65         {
  66         return @_;
  67         }
  68
  69 sub main'stack_push
  70         {
  71         local($num)=@_;
  72         $stack+=$num*4;
  73         &main'sub("esp",$num*4);
  74         }
  75
  76 sub main'stack_pop
  77         {
  78         local($num)=@_;
  79         $stack-=$num*4;
  80         &main'add("esp",$num*4);
  81         }
  82
  83 sub get_mem
  84         {
  85         local($size,$addr,$reg1,$reg2,$idx)=@_;
  86         local($t,$post);
  87         local($ret)="$size PTR ";
  88
  89         $addr =~ s/^\s+//;
  90         if ($addr =~ /^(.+)\+(.+)$/)
  91                 {
  92                 $reg2=&conv($1);
  93                 $addr="_$2";
  94                 }
  95         elsif ($addr =~ /^[_a-zA-Z]/)
  96                 {
  97                 $addr="_$addr";
  98                 }
  99
 100         if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
 101
 102         $reg1="$regs{$reg1}" if defined($regs{$reg1});
 103         $reg2="$regs{$reg2}" if defined($regs{$reg2});
 104         if (($addr ne "") && ($addr ne 0))
 105                 {
 106                 if ($addr !~ /^-/)
 107                         { $ret.=$addr; }
 108                 else    { $post=$addr; }
 109                 }
 110         if ($reg2 ne "")
 111                 {
 112                 $t="";
 113                 $t="*$idx" if ($idx != 0);
 114                 $reg1="+".$reg1 if ("$reg1$post" ne "");
 115                 $ret.="[$reg2$t$reg1$post]";
 116                 }
 117         else
 118                 {
 119                 $ret.="[$reg1$post]"
 120                 }
 121         $ret =~ s/\[\]//;       # in case $addr was the only argument
 122         return($ret);
 123         }
 124
 125 sub main'mov    { &out2("mov",@_); }
 126 sub main'movb   { &out2("mov",@_); }
 127 sub main'and    { &out2("and",@_); }
 128 sub main'or     { &out2("or",@_); }
 129 sub main'shl    { &out2("shl",@_); }
 130 sub main'shr    { &out2("shr",@_); }
 131 sub main'xor    { &out2("xor",@_); }
 132 sub main'xorb   { &out2("xor",@_); }
 133 sub main'add    { &out2("add",@_); }
 134 sub main'adc    { &out2("adc",@_); }
 135 sub main'sub    { &out2("sub",@_); }
 136 sub main'sbb    { &out2("sbb",@_); }
 137 sub main'rotl   { &out2("rol",@_); }
 138 sub main'rotr   { &out2("ror",@_); }
 139 sub main'exch   { &out2("xchg",@_); }
 140 sub main'cmp    { &out2("cmp",@_); }
 141 sub main'lea    { &out2("lea",@_); }
 142 sub main'mul    { &out1("mul",@_); }
 143 sub main'div    { &out1("div",@_); }
 144 sub main'dec    { &out1("dec",@_); }
 145 sub main'inc    { &out1("inc",@_); }
 146 sub main'jmp    { &out1("jmp",@_); }
 147 sub main'jmp_ptr { &out1p("jmp",@_); }
 148 sub main'je     { &out1("je",@_); }
 149 sub main'jle    { &out1("jle",@_); }
 150 sub main'jz     { &out1("jz",@_); }
 151 sub main'jge    { &out1("jge",@_); }
 152 sub main'jl     { &out1("jl",@_); }
 153 sub main'ja     { &out1("ja",@_); }
 154 sub main'jae    { &out1("jae",@_); }
 155 sub main'jb     { &out1("jb",@_); }
 156 sub main'jbe    { &out1("jbe",@_); }
 157 sub main'jc     { &out1("jc",@_); }
 158 sub main'jnc    { &out1("jnc",@_); }
 159 sub main'jnz    { &out1("jnz",@_); }
 160 sub main'jne    { &out1("jne",@_); }
 161 sub main'jno    { &out1("jno",@_); }
 162 sub main'push   { &out1("push",@_); $stack+=4; }
 163 sub main'pop    { &out1("pop",@_); $stack-=4; }
 164 sub main'pushf  { &out0("pushfd"); $stack+=4; }
 165 sub main'popf   { &out0("popfd"); $stack-=4; }
 166 sub main'bswap  { &out1("bswap",@_); &using486(); }
 167 sub main'not    { &out1("not",@_); }
 168 sub main'call   { &out1("call",($_[0]=~/^\$L/?'':'_').$_[0]); }
 169 sub main'ret    { &out0("ret"); }
 170 sub main'nop    { &out0("nop"); }
 171 sub main'test   { &out2("test",@_); }
 172 sub main'bt     { &out2("bt",@_); }
 173 sub main'leave  { &out0("leave"); }
 174 sub main'cpuid  { &out0("DW\t0A20Fh"); }
 175 sub main'rdtsc  { &out0("DW\t0310Fh"); }
 176 sub main'halt   { &out0("hlt"); }
 177 sub main'movz   { &out2("movzx",@_); }
 178
 179 # SSE2
 180 sub main'emms   { &out0("emms"); }
 181 sub main'movd   { &out2("movd",@_); }
 182 sub main'movq   { &out2("movq",@_); }
 183 sub main'movdqu { &out2("movdqu",@_); }
 184 sub main'movdqa { &out2("movdqa",@_); }
 185 sub main'movdq2q{ &out2("movdq2q",@_); }
 186 sub main'movq2dq{ &out2("movq2dq",@_); }
 187 sub main'paddq  { &out2("paddq",@_); }
 188 sub main'pmuludq{ &out2("pmuludq",@_); }
 189 sub main'psrlq  { &out2("psrlq",@_); }
 190 sub main'psllq  { &out2("psllq",@_); }
 191 sub main'pxor   { &out2("pxor",@_); }
 192 sub main'por    { &out2("por",@_); }
 193 sub main'pand   { &out2("pand",@_); }
 194
 195 sub out2
 196         {
 197         local($name,$p1,$p2)=@_;
 198         local($l,$t);
 199
 200         push(@out,"\t$name\t");
 201         $t=&conv($p1).",";
 202         $l=length($t);
 203         push(@out,$t);
 204         $l=4-($l+9)/8;
 205         push(@out,"\t" x $l);
 206         push(@out,&conv($p2));
 207         push(@out,"\n");
 208         }
 209
 210 sub out0
 211         {
 212         local($name)=@_;
 213
 214         push(@out,"\t$name\n");
 215         }
 216
 217 sub out1
 218         {
 219         local($name,$p1)=@_;
 220         local($l,$t);
 221
 222         push(@out,"\t$name\t".&conv($p1)."\n");
 223         }
 224
 225 sub conv
 226         {
 227         local($p)=@_;
 228
 229         $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
 230         return $p;
 231         }
 232
 233 sub using486
 234         {
 235         return if $using486;
 236         $using486++;
 237         grep(s/\.386/\.486/,@out);
 238         }
 239
 240 sub main'file
 241         {
 242         local($file)=@_;
 243
 244         local($tmp)=<<"EOF";
 245         TITLE   $file.asm
 246         .386
 247 .model FLAT
 248 EOF
 249         push(@out,$tmp);
 250         }
 251
 252 sub main'function_begin
 253         {
 254         local($func,$extra)=@_;
 255
 256         push(@labels,$func);
 257
 258         local($tmp)=<<"EOF";
 259 _TEXT\$ SEGMENT PARA
 260 PUBLIC  _$func
 261 $extra
 262 _$func PROC NEAR
 263         push    ebp
 264         push    ebx
 265         push    esi
 266         push    edi
 267 EOF
 268         push(@out,$tmp);
 269         $stack=20;
 270         }
 271
 272 sub main'function_begin_B
 273         {
 274         local($func,$extra)=@_;
 275
 276         local($tmp)=<<"EOF";
 277 _TEXT\$ SEGMENT PARA
 278 PUBLIC  _$func
 279 $extra
 280 _$func PROC NEAR
 281 EOF
 282         push(@out,$tmp);
 283         $stack=4;
 284         }
 285
 286 sub main'function_end
 287         {
 288         local($func)=@_;
 289
 290         local($tmp)=<<"EOF";
 291         pop     edi
 292         pop     esi
 293         pop     ebx
 294         pop     ebp
 295         ret
 296 _$func ENDP
 297 _TEXT\$ ENDS
 298 EOF
 299         push(@out,$tmp);
 300         $stack=0;
 301         %label=();
 302         }
 303
 304 sub main'function_end_B
 305         {
 306         local($func)=@_;
 307
 308         local($tmp)=<<"EOF";
 309 _$func ENDP
 310 _TEXT\$ ENDS
 311 EOF
 312         push(@out,$tmp);
 313         $stack=0;
 314         %label=();
 315         }
 316
 317 sub main'function_end_A
 318         {
 319         local($func)=@_;
 320
 321         local($tmp)=<<"EOF";
 322         pop     edi
 323         pop     esi
 324         pop     ebx
 325         pop     ebp
 326         ret
 327 EOF
 328         push(@out,$tmp);
 329         }
 330
 331 sub main'file_end
 332         {
 333         # try to detect if SSE2 or MMX extensions were used...
 334         if (grep {/xmm[0-7]\s*,/i} @out) {
 335                 grep {s/\.[3-7]86/\.686\n\t\.XMM/} @out;
 336                 }
 337         elsif (grep {/mm[0-7]\s*,/i} @out) {
 338                 grep {s/\.[3-7]86/\.686\n\t\.MMX/} @out;
 339                 }
 340         push(@out,"END\n");
 341         }
 342
 343 sub main'wparam
 344         {
 345         local($num)=@_;
 346
 347         return(&main'DWP($stack+$num*4,"esp","",0));
 348         }
 349
 350 sub main'swtmp
 351         {
 352         return(&main'DWP($_[0]*4,"esp","",0));
 353         }
 354
 355 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
 356 #sub main'wtmp
 357 #       {
 358 #       local($num)=@_;
 359 #
 360 #       return(&main'DWP(-(($num+1)*4),"esp","",0));
 361 #       }
 362
 363 sub main'comment
 364         {
 365         foreach (@_)
 366                 {
 367                 push(@out,"\t; $_\n");
 368                 }
 369         }
 370
 371 sub main'label
 372         {
 373         if (!defined($label{$_[0]}))
 374                 {
 375                 $label{$_[0]}="\$${label}${_[0]}";
 376                 $label++;
 377                 }
 378         return($label{$_[0]});
 379         }
 380
 381 sub main'set_label
 382         {
 383         if (!defined($label{$_[0]}))
 384                 {
 385                 $label{$_[0]}="\$${label}${_[0]}";
 386                 $label++;
 387                 }
 388         if((defined $_[2]) && ($_[2] == 1))
 389                 {
 390                 push(@out,"$label{$_[0]}::\n");
 391                 }
 392         else
 393                 {
 394                 push(@out,"$label{$_[0]}:\n");
 395                 }
 396         }
 397
 398 sub main'data_word
 399         {
 400         push(@out,"\tDD\t".join(',',@_)."\n");
 401         }
 402
 403 sub main'align
 404         {
 405         push(@out,"\tALIGN\t$_[0]\n");
 406         }
 407
 408 sub out1p
 409         {
 410         local($name,$p1)=@_;
 411         local($l,$t);
 412
 413         push(@out,"\t$name\t ".&conv($p1)."\n");
 414         }
 415
 416 sub main'picmeup
 417         {
 418         local($dst,$sym)=@_;
 419         &main'lea($dst,&main'DWP($sym));
 420         }
 421
 422 sub main'blindpop { &out1("pop",@_); }
 423
 424 sub main'initseg
 425         {
 426         local($f)=@_;
 427         local($tmp)=<<___;
 428 OPTION  DOTNAME
 429 .CRT\$XIU       SEGMENT DWORD PUBLIC 'DATA'
 430 EXTRN   _$f:NEAR
 431 DD      _$f
 432 .CRT\$XIU       ENDS
 433 ___
 434         push(@out,$tmp);
 435         }
 436
 437 1;